Charging apparatus for furnaces and the like



Feb. Y 15,1927.

H. 'o.`c. 1sENBERG E1- AL CHARGING AQPAATUS FOR FURNACES AND THE LIKE 2Sheets-.Sheet l Fild Nov. 21. 1924 Feb.' 15., 1192.7.

, 1,618,011 H. o. c; ISENBERG. ET AL CHARGING APPARATUS FOR 4FURIIACESAND THE LIKE Filed Nov. 21. 1924 l 2 sheets-sheet 2 HANs o. c. IsnNBnns,or NNW ironic-N. Y., ANn WALTER PIERNAY, or srrzrtrIN,`

GERMANZAssIsNoRsTo UNIVERSAL INeiNnRAron oonronArroN, A CORPORA- Y TIoNor4 DELAWARE.

CHANGING APPARATUS ron rURNAoEsANn'rHE LIKET y' Application filedNovember 21,1924. lvSerial No. 751,2767. l y

Our invention relates to improvements in fee'd Vchutes suchv as are`adapted to feedv lbroken .or divided material such as coal. Theinvention'is intended to provide a simple and reliable means forcontrolling the amount of material flowing through the chute, and fordelivering definite amounts of the materialto the furnace or other pointof delivery at desired times. kThe invention 1 is also intended toprovide ai series vof .succeeding closures through which the materialpasses which will operate successively so that one closure will beclose'dbefore another isf opened beneath it, and thus the chute Vservesas a seal to prevent the escape of gases. They invention alsoincludescertain details which will be described forfnicely.regulatingVthe,

flow and delivery of chute. Y ,Y

Before proceeding to describe the spe? cific construction ofthe improvedfeeding material through the apparatus, We desire' toA have it understood'that changesin the form, proportion, size, and minor details mayloe-made within the scope of the claimswithout departing from the spiritor sacrificing .anyA of theadvantages'of theinvention. l

In the accompanying drawings forming a part of this specication wehaveshown a. single embodiment of ourfinvention'by way Figure 4 is anelevation similar to Figl lure 2A but seen from the opposite side.,

Figure 5 'is a horizontal section taken on the line Ak-'B of Figure 4:at a somewhat* the plate 5, and such load is sufliclent to larger scale,and

Figure 6 is a horizontal sectiontaken on the lineC-D of Figure 4Llikewise, in ay somewhat largery scale.

In the embodiment shown', the material'r is supplied in any suitablemanner to the fun nel 1 of the feeding chute, and a horizontal sliding:plate 2 iskprovided.y in connection with the funnel 1 for the purposeofy vcontrolling the supply, that is to say, regulating vthe amount ofthe suppliedmaterial as de-v sired.` To this endthe sliding plate 2, maybe adjusted or positionedby meansof a 'hand wheel 2a at the-outer endOfan adjusting spindle 2b, as will be readily'un'derstood on inspectionof Figure 1. Close below thef'slide a `depending plate or flap 3V ispivotally mounted inthe funnel, and a handr lever' 3a iskeyed to theouter end of the one trunnion of the ap 3 for setting purposes, so thatthe latter canl be given any desired inclined position in ordertoproperlyguide,4 the material from the funnel into the drum 4:.

VAt the vsame time the fillingV ldegree ofthe l drum'also depends uponthev setting of the(l Vialoa `V As hereinbeforestate-d thedrum 4 isdivided byineans of radial partitions l? -into a number of compartments4b. As shown in the example'of Figure 1 .there are four com-4 partments1b provided, but it goeswithout l lsaying that any other appropriatenumber'v Vof compartments may be chosen to comply vwith any particularrequirement. TheV direction yofVrotation-of thedrum is denoted- Y byanvarrow.

The uppermost chamber 6 'of the chute with the drum-4 mounted therein isopen at thei bottom, butthe opening is normally held closed by the plateor door 5 keyed to a shaft 5a duly supported in bearings in the wall ofvthe chamber 6aL next below; Firmly attached to the outer end of'itheshaft 5al is an arm`5c carrying .an adjustableV weight 5b in orde-r tonormally holdgthe` plate 5in its closed position, as shown in Figure 1,that is to say, L

with its upper surface in contact with the I wall 8 of the chamber. Itwill be seen that when a loadl of material is deposited vupon thechamber 6, as shown in Figure 3, butv immediately thereuponthe plate 5will re-y turn to its-normal or closing position.y

yso

A closing plate or door 7 of similar construction comprising a shaft 7aand an adjustable weight 7b mounted on an arm 7c is provided at thebottom end of the chamber 6a. In a like manner the overbalancingweight7b is adjusted to normally hold thel plate 7 in its closedvposition as shown in` Y Figure l, and to turn the plate down intoA therdrop into its place of destination.

`l)referably thelowerplate or door may be displaced or positioned in adirectiion opposed with respectto that of the upper plate 5, as willbeseen in Figure 1, so that the niaterialdropping vfrom the upper plate 5will strike upon the plate 7 at a point near the axis of rotation of thelatter.

The-continuous movement ofthe feeding drum 4 may be accomplished bymeans of a belt drive, a chain gearing or a toothed gearing,- in anysuitable manner. Figures l and 5 illustrate an arrangement forintermittent rotation of the druii'i.I Aln this modification the drivecomprises an eccentric 9LL with a rod 9 Vconnected with a bell cranklever 10.

'The horizontal arm of the latter is connect-Vv ed by ineansof a rod 11Vwith two parallel discs 15k-12, loosely mounted on the shaft 14 carryingthe drum e and duly supported iii` bearings provided inthe walls of thechute, so that the movement of the eccentric 92L will cause the twodiscs 152-12a to rotate. nterinediate between' the latter aY toothedWheel 15 is keyed to the shaft 14 which also carries the drum Ll, and apawl 18 is provided between the two discs on a pin firmly connected withthe latter. n As will be seen in y Figure et, the two discs 12 and 12"lare of a larger diameter than the wheel 15 so that the pawl 18 willalways be in engagement with the toothed circumference of the latter.

As' the movement of the eccentric 9a causes the toothed wheel 15 tointermittently rotate, through the agency of the bell crank lever 10 therod 11, and the discs 1212a with the pawl 18 therebetween, the drum 4will at the same time be rotated accordingly at intervals. The pawl 13and the ycti-operating wheel 15 obviously are actuated and work in theusual manner of a pawl and ratchet wheel arrangement, to intermittentlyor stepwise feed the wheel 15 and the drum 4 for-Vk ward.A It will benoticed by reference to Figure 1` that the nvall 8 of the chamber 6extends well down into the chamber 6 forming a. discharge spout, andthevcorresponding closed.

gives them the function of a spout so as to form a concentrateddischarge, and the said ends also make a suitable seat for the closing`plates 5 and Y Y Vif e shall now proceed to describe the operation ofthe charging apparatus.

The material supplieffllto' the funnel 1 in any appropriateinannerrdesceiids towards the drum el between the wall of the funnel andthe properly adjusted guiding plate or flap 8. Owing to the rotation Yofthe drum si the material deposited in any of the compartments lll of thedrum is discharged therefrom on the opposite side, with respect to thefilling side, into the chamber 6 and 'ac-A cumulates on the' bottomplate 5.V As soon as the discharge and accumulation is linished, theplate 5 vreaches a weight in excess of the counter-balancing weight .5bof the plat-e, that is to say constitutesa charge or load of a certainpredetermined weight,V in accordance with the adjustment of the weight5b, and the plate 5 will turn about its pivot or axis 5u and drop theload into the chamber` 6, whereupon the plate 5 will return to itsnormal or .closing position. time the lower plate -or door 7 begins. toopen .under the weight of the received load and' discharges theinaterialinto lthelow'ermost chamber 6*. 'lhis-done, the plate, 7 alsoreturns to its normal or closing position, while the material dropsintothe furnace or the like inforder to undergoa treatmentaor to act asdesired.

The distance between the two plates 5 and 7 and the over-balance of theweights 5b and u 7b respectively, may be chosen in a manner it thesaine` that-the chute will always be closed by at"- least the one or theother plate in order that, at each charging period orV at predeterminedintervals, only the load'of a single compart-f nient oi' the drum 4 willbe fed to the furnace or the like. ln case of combining the feedingapparatus with a furnace or plant inV which chemicalprocesses arecarried'out that do not allow the admission of air through llt) the.chute or develop useful or injurious gases 4 which ought not to bepermitted to escape through the chute, the particular construc-` closureplates operated intermittently butV To positively at predeterminedintervals. p thisend the shaft 7 a has a crank 19 connected by a rod 18with an arm 17 pivotally mounted in the wall of the chute and the lever`5C Vis connected. by a rod 21 with a similar arni 20. On the otherhand'there are three dogs gravity, I

'y seal, the backflow of gases through'the chuteVA` or cams 16 keyed tothe outer Vendofk the drum shaft` 14: which at each rotation" will causethe cams to turn the arms 17 and 2O intermittentlyand tothereby raisethe levers 5c and 7 in order to open the plates Vor doors 5 and' 7respectively. 4 r1`hus the 'latter are opened positively and `closed theactionof the weights 5b and 7" respectively. 1

If for any reason it is desired to have the closure plates 5 *andv 7voperate by gravity,4

this -can lbe* donev by simply removing the connecting rods 1S and 21from the arins 17- and 19 and 20 and 5 respectively. Thus it will beseen that without any modicationl the drinn and closure platescan'operate in desired sequence, and either positively or by As shown inFiguresA t andthe conneci tion of the rod llwith'the horizontal arm ofthe bell crank lever 10 is adjustable Vso that atv each .stroke of therod the'wheel Y15 will be revolved for `a certain predetermined numberofteeth in accordance with the adjustment made. In this manner the rotaryspeed of the ydrum a may be increased `or reduced.

It will be seen that the arrangement described acts as aseal becausewhen a deposit from oner of the compartments of the drum has dropped onthe closure 5 and passed through, said closure will returnto its closedposition before the weight ofthe material opensthe closure 7, and asthese closures act lsuccessively', andas the drum also in connectionwith they incoming `fuel acts as a is prevented.

ThoughA we have described with great particularity of detail a-speciiicembodiment of our invention, yet it is not to be understood therefromthat the invention is *limH` ited to the particular embodimentdisclosed. Various modifications in detail and in the arrangement `andcombination of the parts may be made by tliosevei'sed` in the art,without departure from the invention.

1. A feeding chute for dividedmaterial, comprising inv combination arotary feeding drum, a pawl and ratchet device in operative Y connectionwith theV drum, means for actu ating the said device to impart stepwiseinotion to the drum a chamber locatedbelow said drum, a plate at thebottom of said chamber, a second chamber below the first denotedchamber, a plate at the bottom of said second chamber, and means forpositively operating the two plates in succession at predetermined timesand in accordance with the intermittent movements of the drum,substantially asl and for the purpose set forth.

2; A feeding lchute for divided material, comprising in combination arotary feeding drum, means for intermittently imparting ber. Y 4. In afeed chute, in combination, a plurotary'rniotionfto the drum, a chamberloi cated below the drum, a hinged plateat the bottom of the chamber, asecond chamber below theiirst stated, chamber, a hinged plateat thebottoinof the said secondchainber, means fadaptedto normally hold saidconnectedtliroughiods and suit-able intermediatejmeans with Y the saidplates and plat-es closed, -a shaft 'carryin'g'the drum, 'cams Akeyedtothe shaft, and pivoted arms adapted to beoperated by said cams toopenfthe plates intermittently in succession at predetermined times inaccordance withthe movements of th-e drum, substantially as set L iorth.

super-posed chambers, the wall of the cham-vk ber above projectingdownward into the chamber belowto form a spout, swinging closureplatesfor the lower ends of the chamber walls, and regulatable means forlfeeding material into the uppermost'chamralityof superposed chambers, aswinging closure plate dat the'V lower end lof each of said chambers, arotatable drumV in the upper 1 chamber having conipartmentsto regiilatethe feed through the chambers, a drum shaft for said'V drum, cams on thedrumsliaft, and connections between the cams and the closure y eo: 3.A'fleeding chute comprising a' series of plates disposed to'operate thesaidplates in 'i V.swinging closureplates in said chute, and

means connected to and operated by 'said drum rotatingmeans for swingingsaid clo sure plates. v l

i'. Means for feeding fuelcomprising -a yfeeding chute, a rotatable drumtherein, means for rotating said drum, of swingingclosure plates in saidchute, and means connected to and operated-by said Ydrum rotating meansfor swinging said closure plates successively.

8. Means for feeding fuel comprising a feeding chute, a rotatable drum'ytherein,- means foi-.rotating said drum, a plurality of swinging;`closure plates in'said chute,

`and means connected to and operated by said drum rotating means forswinging said closure plates successively, said closure f a pluralityfor the lowerl ends of the chambers, Y

iio

plates being so disposed that the upper Will wdiseharge its load uponand near the axis of the one beneath.

9. A fuel feeder Comprising a casing having a lower Chamber With adischarge open- Valves, a cam acting alternately upon said members tooperate the valves, a rotary feed device for delivering material to `thedischarge portion'of the upper Chamber, a reciprocating actuator, andmeans operated by the actuator for rotating said CamV and 15 p said feeddevice.

In testimony whereof, We have signedour Y naines to this specificationthis fifth day of Y November, 1924.

HANS o. CLISENBERG. WALTER PIERNAY. [L Sg

